RAD7测氡仪标准条件下不确定度的研究

Research on Uncertainty of the RAD7 Emanometer in Standard Conditions

研究RAD7测氡仪对空气中氡浓度测量的不确定度;通过标准氡室模拟不同的氡浓度,对该测氡仪在标准条件下测量的不确定度进行研究;取包含因子k=2时,在模拟的两种氡浓度情况下得到的该测氡仪不确定度分别为14.38%和14.52%;该测氡仪达到GB50325-2001中对空气中氡检测方法的测量不确定度的要求。

This paper studied the uncertainty of the RAD7 emanometer during measuring Ra in air.By simulating different concentration of Ra in standard Ra chamber,the uncertainty of the emanometer was studied in standard conditions.The uncertainties were 14.38％ and 14.52％ in different Ra concentration when k=2.This RAD7 can reach the demands of the determination uncertainty of Ra in air of the GB50325-2001.